Air control for internal-combustion engines



J. PL REMINHUN.

AIR CONIROL FDR INTERNAL COMBUSTION EYJGINES. APPLICATION FILED MAY 2.I9I1..

1 32 1 Q2 0 Patented Jan. 13, MELZU.

'2 SHEETSSHEEY L 1W Jsepfi Pam Zia/angina,

g 1. P. REMINGTON.

' AIR CONTROL FOR INTERNAL-COMBUSTION ENGINES.

I APPLICATION FILED 'MAY 3.1917.

Patented Jan. 13, 1920.

2 SfPEETS-SHEET 2.

4 I lmwwtw Joseph Pemyifcmizzyfom WWW . Application filed May 3,1917.Serial No. 166,133.

UNITED STATES PATENT (OFFICE.

JOSEPH PERCY BEMINGTON, OF'PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO" IREMINGTON MANUFACTURING COMPANY, OF PHILADELPHIA, PENN SYL- VANIA, ACORPORATION OF PENNSYLVANIA.

AIR mm; non INTERNAL-COMBUSTION ENGINES.

i To all whom it may concern:

. Be .it known that I, JOSEPH PERCY REM- moron, of Philadelphia, in thecounty of Philadelphia and State of Pennsylvan a, have invented certainnew and useful Improvements in Air Controls for Internal- CombustionEngines, whereof the following is a specification, reference being hadto the accompanying drawings. v

My invention has for its object the proper control of air-to theexplosive mixtures before being delivered lnto the cylinders of internalcombustlon engines such as usedon I automobiles, or motor boats; andmore particularly, my object is to providemeans whereby the desiredrichness of-explosive mixture is assured at starting. and whileaccelerating'the engine speed and thereafter permit the engine to becontrolled by the I throttle alone; or on "the other hand to control theengine speed by a variable air supply and timer control when the latteris provided on the automobile or boat, th s latter being in addition tothe assurance of a proper admixture automatically provlded at startingand accelerating the englne speed.

My invention relates to mechanism whereby I provide a valve-controlledauxiliary air inlet between the carbureter and the engine, the operatingmechanism for the air valve being so coordinated with the mechanisms foroperating the throttle valve of I the carburetor that while the throttlevalve is controlled independentlyof the auxiliary or air valve, theopening of the auxiliary or air valve involves the' opening of thethrottle valve if not already opened.

wise the case.

By the use of this invention, when the engine is running at highspeedthe air for the engine can be'largelysupplied from the 5 auxiliaryvalve with a corresponding savingof fuel. Furthermore, I thus obtain agreater possible variation in the amount of air admissable to themixture than is other- My invention also consists of improvementshereinafter described whereby the a above objects and results areattained, said improvements comprising certain organization andcombination of parts which are fully described hereinafter and moreparticularly defined in the claims.

For the purpose of illustrating'my inven- Specification of LettersPatent. Patented tion, I have shown in the accompanying drawings theembodiment thereof which is several instrumentalities of which myinvention consists, can .be variously arranged and organized and that myinvention is not Jan. '13, 1920.-

limited to the precise arrangement and organ'i'zation of theinstrumentalities herein shown and described.

, In the'accompanying drawings :Figur'e I, is an elevation showing thecarbureter of an engine having my device applied to it and illustratingalso the operating parts; F ig; II, is a plan view of the same; Fig.

. III, is an enlarged sectional view along the line III-III, of Fig. II;Fig. IV, is an enlarged plan view showing in detail certain of theconnections disclosed in Fig. II.

'. The carbureter 1, is provided with an air intake 2, and a throttlevalve operated by the spindle 3; This spindle carries a lever '4, theextremity of which isconnected by the rod 5, with means for operatingthe throttle. An arm 6, integrally formed with lever 4, on the spindle3, carries a set screw 7 the end of which abuts against a stop 8,

so that by the adjustment of the set screw the extent to which thethrottle closes is properly adjusted. The parts which have thus far beendescribed are old in the art. According to my: invention I interpose aTo accomplish this, I interpose a plate or gasket 10, between thecoupling flanges 12, 12, which unite the carbureter with the pipe 13,leading to the engine. Thegasket 10, has a channel 14, in which is setthe valve 15, mounted on the spindle 16; When the valve is open air isadmitted to the channel 14, by way of the tube-17, which as shown inFig. 1, opens in closeproximity to the engine cylinders 9, whereby apreliminary heating of the air is obtained. A cook .18, also leads tothe channel 14 and is fitted with a nipple capable of receiving a rubbertube, whereby, if desired, a scavenging agent may be admitted to, theengine. This cock is also useful in case it is desired to admit degreeof opening of the opens the an additionally regulated quantity of coolair to the auxiliary valve, as for example, in warm climates.

The spindle 16, upon which the auxiliary air valve is mounted carries anarm 20, which is connected by link 21, with one arm of a bell cranklever 22, which is pivoted on the arm 6, 'near its extremity. The otherarm of the bell crank lever is under the tension of the spring 23, andhas its extremity connected by the rod 24, to an arm 25, mounted on arock shaft 26, controlled by a pedal 27. The arm of the bell crank lever22, to which the link 21, is attached, carries an adjusting screw 28,the extremity of which contacts with the lever arm 4.

The rod 5, is attached to the extremity of the lever 4, by a sliding orlost motion con nection whic permits said rod to slide through thecollar 30, mounted on the extremity of the lever arm 4, thus permittingrotation of the spindle 3, carr ing the throttle valve without affectingtie positionof I the rod 5; but the end of therod 5, is bent as seen inFig. I, so as to prevent the rod from drawing'out of the collar 30. I

The operation of my device is as'follows: Assuming the auxiliary valveto be closed as shown in the drawings, the throttle valve of thecarbureter is operated manually, in the usual way, by means of the rod5, which valve in opposition to the tension of the sprin 23, tending tokeep it closed. The pull 0 throttle in 0 position to spring 23, has noefl'ect upon t e position of the auxiliary or air valve 15, since*theshifting of the position of the pivot of the bell crank lever 22,does not so affect the relationship of the actuating parts for theauxiliary valve as'to. rotate said valve. There is merely a slight pullof the rod 24, with corresponding depression of the pedal 27 Theauxiliary valve 15 is shown in closed position. By the depression of thepedal 27, and the actuation of the connected parts,

the bell crank lever 22, is swung on its pivot, and by means of the link21, and .arm 20, the auxiliary air inlet is opened. At the same time thecontact of the screw 28, with the lever arm 4, occasions a correspondingopening of the throttle valve, the collar 30, at the end of the leverarm 4, sliding over the rod 5, to permit this operation. The arm 20 mayhave a series of holes 19 with either of which the link 21 may connectto adjust the valve with a given movement of the pedal. By adjusting thescrew 28, it will be apparent that the air valve 15 may be opened to avariable extent relatively to the opening of the throttle valve, andhence this adjustment Will provide a timed opening of the throttle whenopening the air valve to provide smaller relative adjustment of the airto the explothe rod 5, which opens the" sive mixture from thecarbureter, whereas the adjustment by the link 21 and arm 20 willprovide for relatively large adjustments to suit requirements by enginesof diiferent sizes and speeds at normal operation.

It will, therefore be seen that when the auxiliary air valve is closedthe throttle lever may be opened or closed without in any- Wiseaffecting the position of the auxiliary air valve, While on the otherhand, the depression of the pedal opens the auxiliary air valve and alsoopens the throttle, unless it is already open. When the pedal is raisedboth valves again close in response to the action of the spring 23, thethrottle going to its set position. Itfwill thus be seenth'at spring 23holds the auxiliary air inlet valve on its seat against the suction ofthe engine and is opened only by a positive movement from the operator.Y

By this operation itis manifest that when starting the engine theexplosive mixture may have the required richness to insure properignition at initial speeds and automatically reduce therichness of themixture as the speed is accelerated by greater opening of the valvesunder the pedal action.

Were the auxiliary air inlet opened by the throttle lever, the enginewould receive at high speed richer mixtures than can be economicallyutilized. By my device it is possible to effect a'considerable savingof.

fuel when the engine is running at high speed, since the depression ofthe pedal,

although opening the throttle, also opens the auxiliary valve, therebyproducing a much leaner mixture than can be obtained by simply openingthe throttle. It will be understood that while I have shown a suitableconstruction for adapting my invention to the use of automobiles of acertain type, I in nowise intend to restrict myself to suchconstruction, since it is apparent that the mechanism may be constructedin various ways, so long asthe throttle valve and. air valve may opentogether and after being opened, the air valves close without closingthe throttle valve, the latter being thereafter capable of manual timingdevices; or where variable speeds are required and especially highspeeds, the

engine may be accelerated. and controlled largely by use of my auxiliaryair controlling devices.

It Will now be apparent that I have devised a novel and usefulconstruction which embodies the features of advantage enumerated asdesirable, and while I have in the present instance shown and describedthe preferred embodiment thereof which has been found in practice togive satisfactory and reliable results, it is to be understood that I donot restrict myself to the details, as the same are susceptible ofmodification in various particulars without departing from the spirit orscope of the invention.

Having thus described my invention, I claim:

lQIn an apparatus for supplying an explosive mixture to an engine, thecombination of a carbureter, a throttle valve therefor, an auxiliary airinlet, a valve therefor, means for holding said valve closed against thesuction of the engine, a member actu atedby the operator,devicesoperated by said member for controlling the throttle valve for supplyinga relatively rich mixture in varying quantities for starting andfor-slow running, .a second member actuated by the operatorindependently of the first named member, and devices operated by saidsecond member for controlling the throttle valve and the auxiliary airinlet valve, whereby said rich mixture may be diluted into a relativelylean mixture and supplied to the engine in varying quantities for fastrunning.

2. In an apparatus for supplying an explosive mixture to ail-engine, thecombination of a carbureter, a throttle valve therefor, an auxiliary airinlet disposed between 'the carbureter and the engine for tdmitting airto the explosive mixture as it passes from the carbureter to the engine,a valve therefor, means for holding said valve closed against thesuction of the engine, a member actuated by the operator, devicesoperated by said member for controlling the throttle valve for supplyinga relatively rich mixture in varying quantities for starting and forslow running, a second member actuated by the operator independently ofthe first named member, and devices operated by said second member forcontrolling the throttle valve and the auxiliary air inlet valve,whereby said rich mixture may be diluted into a relatively lean mixtureand supplied to the engine in varying quantities for fast running.

3. In an' apparatus for supplying an explosive mixture to an engine, thecombination' of the carbureter, a throttle valve therefor, an auxiliaryair inlet, a valve therefor, spring means for holding said valve closedagainst the suction of the engine, a member actuated by the operator,devices operated by said member for controlling the throttle valve for,supplying a relatively rich mix ture in varying quantities for startingand for slow running. a second member actuated by theoperatorindependently of the first named member, and devices operated bysaidsecond member for controlling the throttle valve and for positivelyopening the auxiliary air inlet valve, whereby said rich mixture may bediluted into a relatively lean mixtureand supplied to the engine invarying quantities for fast running.

4. In an apparatus for supplying an explosive mixture to an engine, thecombina tion of a carbureter, a throttle valve therefor, an auxiliaryair inlet disposed between the carburetor and the engine for admittingair to the explosive mixture as it passes from the carbureter to theengine, a valve there-- for, means for holding said'valve closed againstthe suction of the engine, a member actuated by the operator, devicesoperated by said member for controlling the throttle valve for supplyinga relatively rich mixture in varying quantities for starting and forsloW running, a second member actuated" by the operator independently ofthe first named member, devices operated by said second member forcontrolling the throttle valve and the auxiliary air inlet valve,

whereby said rich mixture may be diluted into a relatively lean mixtureand supplied to the engine in varying quantities for fast running, themeans for holding the valve closed against the suction of the enginealso acting to automatically restore said second member and devicescontrolled thereby to normal starting position when released by theoperator, whereby said first named memher may be actuated to provide arelatively rich mixture in varying quantities.

5. In an apparatus for supplying explosive mixture to an engine, thecombination of a carburete-r, a throttle valve therefor, an auxiliaryair inlet, a valve for said auxiliary air inlet, means for holding saidvalve closed against thesuction of the engine, a member actuated by theoperator, devices operated by said member for controlling the throttlevalve for supplying the engine with a relatively rich mixture in varyingquantities for starting and for slow running, a second member actuatedby the operator, and deair inlet, means for holding said valve closedagainst the suction of the engine, a member actuated by the operator,devices operated by said member for controlling the throttle -valveforsup lying the engine with a rela tively rich mixture in varyingquantities for starting and for slow running, a second member actuatedby the operator, devices operated by said second member for positivelyopening the auxiliary air inlet valve and the throttle valve forsupplying'a relatively lean mixture to the engine in varying quantitiesfor fast running, said last named means being constructed so as topermit the throttle valve to be opened in advance of the auxiliary airinlet valve, and means for automatically closing the auxiliary air in-'let valve when 'said last named means is released by the operator.

.17. In an apparatus for supplying an explosive mixture to an engine,the combination of a carbureter, a throttle valve therefor, an auxiliaryair inlet, a valve for said auxiliary air inlet, means for holding saidvalve closed against the suction of the engine, hand-controlledmechanism for opening the throttle valve independently of the auxiliaryair inlet valve, wherebya relafor, an auxiliary'air inlet, a valve forsaid auxiliary air inlet, means for holdin said valve closed against thesuction of t e eni gine, hand-controlled mechanism for opening thethrottle valve independently of the auxiliary air inlet valve, whereby arelatively rich mixture is supplied to the engine in varying quantitiesfor starting and for slow running, and pedal-operated mechanism forcontrolling the auxiliary valve.

and the throttle valve for diluting said rich mixture into a relativelylean mixture for supplying the same to the engine in varying quantitiesfor fast running, said last named mechanism being constructed so as topermit the. throttle valve to be opened in advance of the auxiliary airinlet valve by the hand-controlled mechanism.

9. In an apparatus for supplying an explosive mixture to an engine, thecombination of a carbureter, a throttle valve therefor, anauxiliary airinlet, a valve for said auxiliary air inlet, means for holding saidvali'e closed against the suction of the engine, hand-controlledmechanism for oper-,

ating the throttle and pedal-controlled mechanism connected to theauxiliary air inlet valve for positively operating the same, and devicesactuated by the auxiliary air inlet valve mechanism for opening thethrottle for supplying a'relatively lean mixture in varying quantitiesfor fast running.

- In testimony whereof, I have hereunto signed my name at Philadelphia,Pennsylvania, this 26th day of April 1917.

JOSEPH PERCY REMINGTON.

Witnesses: i

JAMES H. BELL, E. L. FULLERTON.

